Teachers

Reviewed by SOMA HEALTH's Medical Research Team

A teaching day rarely sits still. You are on your feet through back-to-back periods, moving between desks, projecting your voice, and staying mentally sharp from the first bell to the last stack of grading. That kind of sustained output is, at its root, a demand on your cells for energy. This guide looks at where that energy actually comes from, what the human research on urolithin A does and does not show, and how SOMA HEALTH thinks about supporting educators through long school days and the back-to-school stretch.

Why a school day is really an energy story

Standing, walking the room, and holding attention for hours are all powered by the same microscopic engines: the mitochondria inside your muscle and nerve cells. Podiatry and occupational-health sources routinely describe teachers as being on their feet for the majority of the school day, and that physical load sits on top of the cognitive load of planning, managing a classroom, and adapting on the fly. When people describe feeling drained by the afternoon, part of what they are describing is cellular: mitochondria working hard to keep up with demand.

Mitochondria are not permanent. They wear out with use and age, and healthy cells rely on a maintenance process to clear the worn ones so fresher, better-functioning mitochondria can take their place. That recycling process is called mitophagy. If you want the deeper background, our explainer on mitophagy and our overview of mitochondrial health walk through it step by step. The short version: keeping the mitochondrial pool in good repair is one of the levers your body uses to sustain energy over a demanding day.

Where urolithin A fits in

Urolithin A is a compound your gut bacteria can make when you eat foods rich in ellagitannins, such as pomegranates, walnuts, and certain berries. It is what researchers call a postbiotic: you do not get it directly from the food, you get it from what your microbiome does with the food. Here is the catch that surprises most people. Only some microbiomes carry the bacteria needed to convert ellagitannins into meaningful amounts of urolithin A. Two people can eat the same handful of walnuts and end up with very different levels. That variability is a big part of why a standardized supplement exists at all, and you can read more about the dietary side in our guide to foods high in urolithin A.

In laboratory and preclinical research, urolithin A has been studied for its ability to support mitophagy, that housekeeping process of recycling worn-out mitochondria. The foundational preclinical work here is Ryu and colleagues (2016, Nature Medicine), which reported effects on mitophagy and muscle function in rodents and lifespan in the worm C. elegans. That is genuinely interesting mechanism-level science, but it is animal and cell research, and it should be read as a hypothesis about how the compound works, not as proof of a human benefit.

What the human research actually shows

The stronger and more relevant evidence for someone thinking about their own energy and stamina comes from human trials. It is worth being precise about what each one found.

Safety came first

Andreux and colleagues (2019, Nature Metabolism) ran the first-in-human study. It reported that urolithin A was safe and well tolerated at doses up to 1,000 mg per day, and it detected a mitochondrial gene-expression signature in participants. This is a foundation study: it tells us the compound is bioavailable and reasonably tolerated, and that it engages mitochondrial pathways in people.

Muscle endurance and strength

Two mid-length trials are the most cited. Liu, D'Amico and colleagues (2022, JAMA Network Open) studied older adults over roughly four months and reported improvements in measures of muscle endurance. Singh and colleagues (2022, Cell Reports Medicine) studied middle-aged adults over four months with 500 mg and 1,000 mg daily arms, and reported benefits for muscle strength and aspects of exercise performance. For a teacher, the relevant read-through is stamina and muscular endurance rather than a jolt of stimulant energy. Urolithin A is not a caffeine substitute and it will not feel like one.

Newer human signals

More recent human work has broadened the picture. A 2024 randomized controlled trial in the Journal of the International Society of Sports Nutrition looked at resistance-trained men over eight weeks. A 2025 randomized trial published in Nature Aging (roughly 28 days) reported support for the mitochondrial health of immune cells in midlife adults, in the context of what researchers call inflammaging. And a 2025 trial in distance runners added data in an endurance-athlete population. These are encouraging, but they are early and span different populations and endpoints.

The honest summary is the one a 2024 systematic review in Ageing Research Reviews reached: the evidence for targeting aging with urolithin A in humans is still emerging. That framing matters. There is real human data here, more than most novel ingredients can claim, but it is not a closed case. For the full evidence walk-through, see our summary of the clinical studies and the broader urolithin A guide.

Practical guidance for the school year

If you decide to try urolithin A, a few realistic expectations help. The studied doses run from 500 to 1,000 mg per day, with 1,000 mg at the top of that range; SOMA HEALTH is formulated at 1,000 mg per four-gummy serving. Benefits in the human trials showed up over weeks to months of consistent use, not overnight, so this is a back-to-school habit to start early and keep, not a same-day fix for a rough Monday. It is best thought of as foundational support for cellular energy and muscle, layered on top of the basics that no supplement replaces: sleep, protein, movement, hydration, and supportive footwear if you are standing all day.

For more on the mechanics, our pages on urolithin A for energy and how long it takes to work go deeper, and if you are comparing formats, our roundup of the best urolithin A gummies lays out what to look for.

One important note. This is a structure and function supplement intended to support normal cellular energy and muscle function. It is not a treatment for fatigue, burnout, or any medical condition. Persistent exhaustion, foot or joint pain, or low energy that interferes with your work deserve a conversation with your own healthcare provider, who can look at the full picture. A supplement is support, not a substitute for care.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This guide is educational and is not a substitute for advice from a qualified healthcare provider.